➀ MIT engineers develop a new nanofiltration process to reduce hazardous waste from aluminum production; ➁ The membrane selectively captures more than 99 percent of aluminum ions in lab-scale experiments; ➂ If implemented, the technology could reduce wasted aluminum and improve waste environmental quality.

➀ MIT engineers have developed a nanofiltration process to reduce waste from aluminum production; ➁ The process captures aluminum ions from effluent streams and recycles them; ➂ Lab experiments demonstrate the ability to capture over 99% of aluminum ions.

1. Rio Tinto's share price has declined 14% year-to-date due to falling iron ore prices and demand uncertainty, but its diversification in aluminum and copper offers growth potential. 2. Chinese demand for iron ore has likely peaked, but RIO's high-grade ore from the upcoming Simandou mine positions it well for future demand shifts. 3. Despite muted growth prospects, the company's strong dividend capacity and exposure to growing aluminum and copper markets justify a Hold rating.